[quote author="Tobias Hunger" date="1309415289"]Just jump into the header and then hit F4 to go to the cpp file. Once it is loaded it is available via F2 as well.

The reasoning is that we only want to parse the code that is used in your project: That is your sources and the headers those use. Parsing random .cpp files that happen to be located next to the headers you use will only slow down the parsing as well as the completion itself and does blow up memory usage, too.[/quote]